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Tham khảo tài liệu 'advances in solid-state lasers: development and applicationsduration and in the end limits part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 152 Advances in Solid-State Lasers Development and Applications Fig. 4-3. long term ice-cloud measurement. January 24 2009. Temp. 3.7deg Hum. 70 Cloudy In-line Typed High-Precision Polarization Lidar for Disaster Prevention 153 Fig. 4-4. lidar echoes p-components in bad weather condition. a July 4 2006. Temp. 28deg. Hum. 52 . Before heavy rain b July 14 2006 Temp. 32deg. Hum. 50 Thunder cloud proportional to the product of the ionization electron density ne and the magnetic flux density B along the beam propagation path. The linearly polarized beam can be regarded as a combination of the clockwise and the counterclockwise circularly polarized beams. The refractive indices of the ionized atmosphere for each circularly polarized beam are as follows. p 5-1 eB me where cope mce are the plasma and electron cyclotron frequencies respectively e is the fundamental charge me is the electron mass and s0 is the permittivity of free space. Therefore the rotation angle of polarization of the beam propagated at distance L Li L2 is obtained as follows. s nfán n- dl 2.62 X10-13 2 fL2 nBdl L1 e 5-2
